Auto-rotating PED Display for Cargo Handling Orientation
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Solution Overview
Problem
Operators controlling cargo handling systems in aircraft face confusion due to the failure of portable electronic device displays to update their orientation with the aircraft's heading, leading to incorrect direction for moving unit load devices and activating power drive units.
Innovation Solution
A portable electronic device with a camera and processor that scans optical labels on the aircraft walls to determine the aircraft's heading and automatically orient its display to match the operator's viewing direction, using computer vision techniques and sensors to calculate and adjust the display orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator moves through the aircraft carrying the PED, then the operator can freely access different cargo areas, but the display orientation fails to update with the aircraft heading, causing operator confusion
Solution Approach 1:
The display orientation is made dynamic by continuously updating it based on the detected aircraft heading and the operator's viewing direction. The system automatically rotates the display orientation to match the aircraft heading, ensuring the information displayed remains accurate as the operator moves through different cargo areas.
Solution Approach 2:
The system uses sensors (camera, accelerometer, gyroscope) to detect the aircraft heading and operator's viewing direction, then feeds this information back to automatically adjust the display orientation. This closed-loop feedback mechanism ensures the display remains correctly oriented relative to the aircraft heading regardless of operator movement.
2Device complexity
If the PED display maintains a fixed orientation, then the device structure remains simple, but the display does not align with the aircraft heading, leading to incorrect cargo movement control
Solution Approach 1:
The patent replaces complex mechanical orientation adjustment mechanisms with software-based solutions. Sensors (camera, accelerometer, gyroscope) and image processing algorithms automatically determine aircraft heading and calculate the required display rotation, eliminating the need for manual mechanical adjustment while ensuring accurate alignment with the aircraft heading.
3Measurement precision
If the display automatically updates with aircraft heading, then the operator can accurately control cargo movement direction, but the system complexity increases due to additional sensors and processing requirements
Solution Approach 1:
The patent makes the PED multi-functional by using a single device that combines camera, accelerometer, and gyroscope capabilities to perform both aircraft heading detection and display orientation adjustment. This universal approach allows one device to handle multiple functions (navigation, orientation tracking, display control) without requiring separate specialized systems for each function.
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
An article of manufacture may include a tangible, non-transitory computer-readable storage medium having instructions stored thereon for orienting a display of a portable electronic device configured to control a cargo handling system. The instructions, in response to execution by a processor, cause the processor to perform operations which may comprise identifying (202) an optical label scanned by a camera of the portable electronic device, determining (206) a viewing angle of the camera relative to the optical label, and determining (212) an orientation of the display of the portable electronic device based on the viewing angle of the camera relative to the optical label.